Improved tuyere



NITED STATES PATENT OFFICE.

WILLIAM VALDEN BALL, OF GRANDV IEW, ILLINOIS.

IMPROVED TUYERE.

Specification forming part of Letters Patent'No. 43,892, dated August23, 1864.

do hereby declare the following to be a full` and exact description ofthe saine, reference being had to the accompanying drawings, making partof this specilication, in which- Figure l is a plan or top view of myimproved tuyere withits cap or cover removed. Fig. 2 is a similar Viewof the cap looking from the under side. Fig. 3 is a vertical section inthe line a; x, showing the tuyere in condition for use.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in providing an effectual expedient forpreventing coal, cinders, ashes, 85e., from working into and eloggingthe tuyere, as will be hereinafter fully t xplained.

In order that others skilled in the art to which my invention appertainsmay be enabled to fully understand and use the same, I will proceed todescribe its construction and operation.

In the accompanying drawings, A may represent the main body of a tuyere,of Octagonal or other suitable form. Air may be forced from a pair ofbellows into the box A of the tuyere through a nozzle, B, in customarymanner. The top of the tuyere is formed at its center with a crown ordome, A', around the base of which are a series of apertures, a, throughwhich the air may freely pass from the interior of the tuyere A tosupport the fire upon the hearth in which the tuyere may be embedded. Cis a cap or cover, which may be cast or formed separately and securedupon the tuyere A in any suitable manner. In the top of the cap G is anopening, C', to and through which the air that is forced through thetuyere passes into the re. In the top of the dome A' is formed aconcavity or depression, A2, which is concentric with and occupies aposition direct-ly beneath the opening C' in the cap C, and which is attop somewhat larger than said opening C', in 0rder that a space orpassage, a', will exist between the upper edge or portion` of theconcwity A2 and a circular ange, c, the latter being formed around theopening C' on the under side of the cap C. rlhis iiange c projectsdownward into the concavity A2, so that the upper edge of the latteroccupies a position above the lower edge of the flange c. It will beunderstood that the cap C is embedded in the hearth of the forge, andthat the lire is built immediately over the opening C'.

c will be readily understood. W'lien'the forge is in operation, theblast from the bellows passes into the box A through openings a, spaceD, and passage a', and thence out into the tire at the opening C'. Now,when the blast reaches the ange c, it is deliected by the latter in suchmanner that before passing out at the opening C' it has to pass down thesides of the concavity A2 and then ascend at the center thereof. It isobvious that any coal, cinders, ashes, or other substance from the lirewhich may fall through the opening C' will be caught by the ascendingblast ot' air and forced upward, so that it will be impossible for anyof these substances to accumulate in the concavity A2.

In like manner it will be impossible for the ashes, 85e., to passthrough the passage a' and lodge between the cap G and dome A', inas-,mueh as the ange c causes the air to pass in a downward direction insaid passage a'. The simplicity of the invention renders a more detaileddescription unnecessary.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

'Ihe cap G, provided on the under side and around its central openingwitha downward1yprojecting ange, o, in combination with the dome-shapedplate A', having a depression, A2, in the top, the edge of whichdome-shaped depression rises above the edge of the flange c, as shownand described, and all parts arranged for joint operation in the'mannerand for the purposes specified.

The above specification of Iny improveugent in tnyeres'signed this 27thday ot' May, 1 64.

VILLIAM VALDEN BALL.

Witnesses:

CHARLES D. SMITH, JAMES H. GRIDLEY.

The effect of the employment of the flange

